python3.6 Cython nametuple TypeError

[beruhan]

I have a class that inherits from NamedTuple,I have compile it to pyd file on windows use cython,when I import the class and create a object in another py file,It throws error TypeError: new() takes 1 positional argument but 4 were given, the class as follows:

from typing import NamedTuple


class Info(NamedTuple):
    service: str
    damage: str
    privilege: str


info = Info("http", "no", "no")

when I don't compile it to pyd,It can use normally,How to deal with it?

[beruhan]

does any one has alternative plan? this usage is heavily used in the project.，and I don't know how to

[scoder]

This is a duplicate of #2552.

[TeamSpen210]

What you can do is to simply not use namedtuple at all. Run this code in regular Python, then print out the Info._source attribute. This is a copy of the equivalent code to define the class - just cythonise that. Get rid of the builtins imports though, Cython can do those better.